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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 85 (Heating / Air Conditioning System - Diagnostic Codes (3 Of 3), Circuit Tests & Symptom Tests) >> AIR CONDITIONING SYSTEM (for PHEV Model) >> Blower Motor Circuit [08/2023 - ] >> Description

Blower Motor Circuit [08/2023 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 450h+ and 2024 Lexus RX 450h+. However, it is still accessible from the selected car via links, so may be relevant.

The blower motor with fan sub-assembly is operated by signals from the air conditioning amplifier assembly.

If the airflow volume is low or the blower speed cannot be changed, the following factors may be the cause.

Symptom Factor
Airflow volume cannot be changed
  • Air conditioning amplifier assembly malfunction
  • Blower motor with fan sub-assembly malfunction
  • Harness or connector